From Gray Glue to Green Foundations: Cement’s 2100 Transition - CleanTechnica

The article "From Gray Glue to Green Foundations: Cement’s 2100 Transition" by TFIE Strategy Inc highlights the critical role cement plays in global infrastructure and its significant contribution—nearly 10%—to worldwide CO2 emissions. It emphasizes the urgent need to retain cement’s benefits while eliminating its carbon footprint. The report outlines a multi-faceted transition strategy for the cement and concrete industries through the 21st century, combining technological innovation, material substitution, and demand reduction. Key solutions include electrifying cement kiln process heat using emerging high-temperature electric technologies, which would reduce reliance on fossil fuels and facilitate carbon capture by isolating CO2 from limestone. Additionally, replacing traditional Portland cement with alternative binders such as calcined clays (e.g., LC3), geopolymers, and alkali-activated slag can significantly cut emissions. These alternatives use industrial by-products or abundant minerals and are commercially viable but require standardized testing and supportive policies to scale. Demand reduction strategies involve optimized building